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United States Patent | 5,530,562 |
Eisenbarth ,   et al. | June 25, 1996 |
An image acquisition system includes a transport mechanism for transporting sheets of objects past a sensor. The sensor scans the objects and generates data streams which are scaled by a multiplier to compensate for the speed variation of the transport mechanism. At speeds much lower than a nominal speed, the scanning rate of the sensor is increased to generate several data streams for each scanned line, which are then combined in a single speed corrected signal stream for further processing.
Inventors: | Eisenbarth; Christoph (El Granada, CA); Finkelstein; Ira (San Jose, CA); McGhie; Dennis (Portola Valley, CA); Panofsky; Edward (Woodside, CA) |
Assignee: | De La Rue Giori S.A. (Lausanne, CH) |
Appl. No.: | 926775 |
Filed: | August 6, 1992 |
Current U.S. Class: | 358/496; 358/443; 358/446; 358/486 |
Intern'l Class: | H04N 001/40; H04N 001/04 |
Field of Search: | 358/75,80,76,78,412,446,486,496,443,471 340/717 250/71,214,214 C,556 348/251 |
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5014324 | May., 1991 | Mazumder. | |
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